WO2018196638A1 - Information bearing method and device - Google Patents

Abstract

Provided are an information bearing method and a device, used to increase the number of terminals that an identification sequence can represent. The method comprises: Polar code encoding, by a transmitting end, on a first bit sequence to generate a coded second bit sequence; bearing, by the transmitting end, part or all of the identification sequence in the second bit sequence, to generate a third bit sequence, wherein the identification sequence is used to identify the terminal; and transmitting, by the transmitting end, the third bit sequence.

Description

Information bearing method and device

The present application claims the priority of the Chinese Patent Application, the entire disclosure of which is hereby incorporated by reference. .

Technical field

The embodiments of the present invention relate to the field of communications technologies, and in particular, to an information carrying method and apparatus.

Background technique

In a wireless network communication system, when a base station schedules a terminal, the base station often identifies different terminals by using an identification sequence, and the base station transmits scheduling information by means of an identifier sequence scrambling method.

For example, in the Long Term Evolution (LTE) system, a common identification sequence is a Radio Network Temporary Identifier (RNTI) sequence. The existing RNTI sequence length is 16 bits. As shown in Figure 1, in the encoding process of the physical downlink control channel (English: Physical Downlink Control Channel, PDCCH), the base station first performs 16 downlink control information (Downlink Control Information, DCI) to be sent. The bit length of the Cyclic Redundancy Check (English: Cyclical Redundancy Check, abbreviation: CRC) code, the information formed after the encoding contains DCI information and 16-bit CRC information, and then the base station compares the 16-bit RNTI information with the 16-bit CRC information. Or (English: exclusive OR, abbreviation: XOR) operation (that is, scrambling operation), obtain 16-bit CRC information scrambled by RNTI, and serialize 16-bit CRC information scrambled by RNTI to the above DCI information, and perform Channel coding, modulation, mapping, and transmission procedures.

In the fifth generation (5th generation, 5G) communication system and the subsequent more possible communication systems, there will be an application scenario of massive machine type communication (mMTC), requiring wide coverage and massive access. If the RNTI scrambling CRC is used in the above existing system, since the length of the RNTI is limited to 16 bits, and the number of terminals that can be identified by the 16-bit RNTI is only 2 ¹⁶ = 65536, it is obvious that the RNTI is scrambled. The method does not necessarily meet the application scenarios of mass access in the future.

Summary of the invention

The embodiment of the present invention provides an information bearing method and device, which are used to solve the problem that the number of terminals that can be identified by using the existing information bearer identification sequence is low.

The specific technical solutions provided by the embodiments of the present application are as follows:

The first aspect provides an information carrying method, where the identifier sequence used to identify the terminal is carried in the encoded Polar code, and the encoded Polar code code length is N, N is a positive integer, for example, an optional value, N>16. In this way, the length of the identification sequence can be extended to N bits at the longest, and the number of terminals that can be identified by the N-bit length identification sequence is increased by 2 ^N .

In a possible design, the bit sequence before encoding is recorded as a first bit sequence, and the transmitting end performs Polar code encoding on the first bit sequence to generate a coded second bit sequence, and the transmitting end identifies the part of the sequence or All are carried in the second bit sequence to generate a third bit sequence, and the transmitting end sends the third bit sequence. The identification sequence is used to identify the terminal. In this way, the encoded bit sequence is used to carry the identification sequence, which can ensure that the value of the fixed bit position of the Polar code before encoding remains 0, thereby helping to maintain relatively low hardware overhead and helping to solve the existing system. The problem that the length of the identifier sequence is insufficient is increased, and the length of the identifier sequence is increased, which increases the number of terminals that can be identified by the identifier sequence, and is more suitable for the application scenario of mass access in the future.

Optionally, the identification sequence is an RNTI sequence.

Optionally, the identifier information is a serial number of the terminal or a group number of the terminal group.

In a possible design, the transmitting end carries part or all of the identification sequence in the second bit sequence, and generates a third bit sequence, which can be implemented by: the sending end adopting the identification sequence Part or all of the second bit sequence is scrambled to generate a third bit sequence.

In a possible design, the transmitting end performs a scrambling operation on part or all of the second bit sequence by using part or all of the identification sequence. Optionally, the part of the second bit sequence may be selected in any manner according to actual needs. In this way, the length of the identification sequence can be made more flexible and controllable, and the scrambled bit position can be determined more according to actual needs.

In a possible design, the transmitting end performs the scrambling operation on the second bit sequence by using part or all of the identification sequence, which may be implemented by: the sending end is part of the identification sequence or All are scrambled into the second bit sequence according to the set mapping relationship.

In a possible design, the transmitting end sequentially scrambles part or all of the identification sequence into the second bit sequence in a manner of repeating several times.

In a possible design, in addition to the scrambling mode, the transmitting end may perform an interleaving operation on the second bit sequence according to an interleaving pattern to generate a third bit sequence, where the interleaving pattern is determined by the identifier sequence. Part or all is determined. Thus, the third bit sequence can also be considered to carry the identification sequence.

In a possible design, before the transmitting end performs polarity Polar code encoding on the first bit sequence, the transmitting end acquires information bits to be encoded, and performs check coding on the information bits to obtain a check bit. The transmitting end carries all of the identification sequence in the check bit, or the transmitting end carries the first part of the identification sequence in the check bit; the sending end is based on the information bit and The check bit carrying the identification sequence generates the first bit sequence. Optionally, the check code may be a CRC check code or a PC check code.

In a possible design, if the transmitting end carries the first part of the identification sequence in the check bit, the sending end carries the second part of the identification sequence to the second bit. In the sequence, wherein the first portion and the second portion are different, or the first portion and the second portion have an intersection.

The second aspect provides an information carrying method, where the receiving end acquires a sequence to be decoded, and the receiving end performs a descrambling operation on the sequence to be decoded by using part or all of the identifier sequence; or, the receiving end Performing a deinterleaving operation on the sequence to be decoded by using an interleaving mode, where the interleaving mode is determined by part or all of the identification sequence, the identification sequence is used to identify a terminal, and the receiving end is to perform a descrambling operation. Or the sequence after the deinterleaving operation performs polar Polar code decoding. In this way, the problem of insufficient length of the identification sequence in the existing system is solved, and the length of the identification sequence is increased, which increases the number of terminals that can be identified by the identification sequence, and is more suitable for the application scenario of mass access in the future.

In a possible design, the receiving end performs a descrambling operation on part or all of the second bit sequence by using part or all of the identification sequence.

In a possible design, the receiving end adopts part or all of the identification sequence, and performs descrambling operation on the sequence to be decoded according to the set mapping relationship.

In a possible design, the receiving end adopts part or all of the identification sequence, and performs descrambling operations on the sequence to be decoded in sequence in a manner of repeating several times.

In a possible design, after the receiving end performs the Polar code decoding on the sequence after the descrambling operation or the de-interleaving operation, the receiving end extracts the parity bit in the decoded sequence, and adopts the identifier. Part or all of the sequence performs a descrambling operation on the parity bits.

In a third aspect, there is provided an information carrying apparatus having a function of implementing a sender behavior in any of the possible aspects of the first aspect and the first aspect described above. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a fourth aspect, there is provided an information carrying apparatus having a function of implementing a receiving end behavior in any of the possible aspects of the second aspect and the second aspect described above. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a fifth aspect, an information carrying apparatus is provided, the information carrying apparatus comprising a transceiver and a processor, wherein the processor is configured to invoke a set of programs to perform any of the first aspect and the first aspect as described above Possible methods described in the design. Optionally, the structure of the information carrying device further includes a memory for storing a program called by the processor.

In a sixth aspect, an information carrying apparatus is provided, the information carrying apparatus comprising a transceiver and a processor, wherein the processor is configured to invoke a set of programs to perform any of the second aspect and the second aspect as described above Possible methods described in the design. Optionally, the structure of the information carrying device further includes a memory for storing a program called by the processor.

According to a seventh aspect, there is provided a communication system comprising the apparatus of the third aspect or the fifth aspect, and the apparatus of the fourth aspect or the sixth aspect.

An eighth aspect, a computer storage medium for storing a computer program, the computer program comprising any of the first aspect, the second aspect, any of the possible implementations of the first aspect, or the second aspect The instructions of the method in a possible implementation.

In a ninth aspect, an embodiment of the present application provides a computer program product comprising instructions that, when run on a computer, cause the computer to perform the method described in the above aspects.

DRAWINGS

1 is a schematic diagram of a PDCCH encoding process in the prior art;

2 is a schematic diagram of a Polar code encoding manner in an embodiment of the present application;

3 is a schematic structural diagram of a system in an embodiment of the present application;

4 is a schematic flowchart of a method for carrying information in an embodiment of the present application;

FIG. 5 is a schematic diagram of a PDCCH encoding process in an embodiment of the present application;

FIG. 6 is a schematic diagram of a manner of carrying an RNTI in an embodiment of the present application;

FIG. 7a is a second schematic diagram of a manner of carrying an RNTI according to an embodiment of the present application;

FIG. 7b is a third schematic diagram of a manner of carrying an RNTI according to an embodiment of the present application;

FIG. 8 is a fourth schematic diagram of a manner of carrying an RNTI according to an embodiment of the present application;

FIG. 8b is a fifth schematic diagram of a manner of carrying an RNTI according to an embodiment of the present application;

FIG. 9 is a sixth schematic diagram of a manner of carrying an RNTI according to an embodiment of the present application;

FIG. 10 is a schematic diagram of a PDCCH decoding process in an embodiment of the present application;

11 to FIG. 14 are schematic structural diagrams of an information carrying device according to an embodiment of the present application;

FIG. 15 is a schematic structural diagram of a system chip in an embodiment of the present application.

detailed description

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The Polar code coding method has the characteristics of high performance, low complexity, and flexible matching. It has been identified as the 5th Generation (5G) communication system by the 3rd Generation Partnership Project (3GPP). The coding scheme of the control channel. An embodiment of the present application provides an information carrying method and device, where an identifier sequence for identifying a terminal is carried in a coded Polar code, and assuming that the encoded Polar code length is N and N is a positive integer, compared to LTE. The PDCCH identification sequence is used to scramble the 16-bit CRC. The length of the identifier sequence is not limited to 16. The length of the identifier sequence can be extended to N bits. The number of terminals that can be identified by the N-bit length identification sequence increases. Is 2 ^N . With the solution of the embodiment of the present application, the low hardware overhead of the Polar code can be maintained, which helps to solve the problem of insufficient length of the identification sequence in the existing system, increases the length of the identification sequence, and increases the number of terminals that can be identified by the identification sequence. It is more suitable for the application scenarios of massive access in the future. It should be noted that, although the scheme of the embodiment of the present application is described in the coding mode as a Polar code, the method provided by the embodiment of the present application may also be applied to other coding modes, for example, a low density parity check code (Low Density Parity). The check code (LDPC) and the convolutional code (Turbo) are all protected by the embodiment of the present application as long as the coded bearer identification sequence is used.

In order to better understand the solution of the embodiment of the present application, the following briefly introduces the channel coding mode of the Polar code.

为2×2矩阵

的乘积。如图2所示，展示了一个8×8的编码矩阵，其中向量u用(0，0，0，U ₃，0，U ₅，U ₆，U ₇)表示，经过编码矩阵，编码后的比特以向量(X ₀，X ₁，X ₂，X ₃，X ₄，X ₅，X ₆，X ₇)表示。在发送端，通过Polar码的编码，会产生极化现象，使得向量u中的一部分比特经过一个等效高可靠信道进行传输，另一部分比特经过一个等效低可靠信道进行传输，在接收端通常通过逐比特消除(即SC)方式进行译码。即向量u中的一部分比特经过一个等效高可靠信道并以高概率被译对，另一部分比特经过一个等效低可靠信道并以低概率被译对。一般来说，将高可靠信道用于传输信息比特，而将低可靠信道对应的比特冻结，例如，冻结比特的位置可以置为零，不传输有效数据。如图2中所示，将{u ₀,u ₁,u ₂,u ₄}设置为冻结比特的位置，将{u ₃,u ₅,u ₆,u ₇}设置为信息比特的位置，将长度为4的信息向量{i ₀,i ₁,i ₂,i ₃}经过编码后，生成8位编码后比特序列。 The encoding method of the Polar code can be expressed by the following formula: x=u·F _n , where u is an N long binary vector, F _n is a Kronecker power Kronecker transform matrix, and is also an encoding matrix of the Polar code. among them

2×2 matrix

The product of. As shown in FIG. 2, an 8×8 coding matrix is shown, where the vector u is represented by (0, 0, 0, U ₃ , 0, U ₅ , U ₆ , U ₇ ), after being encoded, encoded. The bits are represented by vectors (X ₀ , X ₁ , X ₂ , X ₃ , X ₄ , X ₅ , X ₆ , X ₇ ). At the transmitting end, by the encoding of the Polar code, a polarization phenomenon occurs, so that a part of the bits in the vector u are transmitted through an equivalent high-reliability channel, and another part of the bits are transmitted through an equivalent low-reliable channel, usually at the receiving end. Decoding is performed by bit-by-bit cancellation (ie, SC). That is, a part of the bits in the vector u pass through an equivalent high-reliability channel and are transposed with high probability, and another part of the bits pass through an equivalent low-reliability channel and are translated with a low probability. In general, a highly reliable channel is used to transmit information bits, while a bit corresponding to a low reliable channel is frozen. For example, the position of the frozen bit can be set to zero without transmitting valid data. As shown in FIG. 2, {u ₀ , u ₁ , u ₂ , u ₄ } is set as the position of the frozen bit, and {u ₃ , u ₅ , u ₆ , u ₇ } is set as the position of the information bit, The information vector {i ₀ , i ₁ , i ₂ , i ₃ } of length 4 is encoded to generate an 8-bit encoded bit sequence.

In the embodiment of the present application, after the foregoing encoding, the identification sequence for identifying the terminal is carried in the encoded bit sequence, and the encoded bit sequence carrying the identification sequence is modulated, then passed through the noise channel, and then output.

As shown in FIG. 3, the system architecture applied in the embodiment of the present application includes a transmitting end 301 and a receiving end 302. The transmitting end 301 can be a base station, and the receiving end 302 is a terminal; or the transmitting end 301 is a terminal, and the receiving end 302 is a base station. The base station is a device deployed in the radio access network to provide wireless communication functions for the terminal. The base station may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. It can be applied in systems with different radio access technologies, such as in LTE systems, or in more possible communication systems such as 5G communication systems. The base station may also be another network device having a base station function, and in particular, may also be a terminal functioning as a base station in a device-to-device (D2D) communication. The terminal may include various handheld devices, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem, and various forms of user equipment (User Equipment, UE), mobile stations (Mobile) Station, MS), etc.

In the embodiment of the present application, the identifier sequence is used by the base station to identify different terminals. For example, the identifier sequence may be an RNTI sequence, or may be a sequence number of the terminal, a group number of the terminal group, and the like, without loss of generality. The RNTI is an example.

Based on the system architecture shown in FIG. 3, as shown in FIG. 4, in the embodiment of the present application, the specific process of the information bearing method is as follows.

Step 401: The transmitting end performs Polar code encoding on the first bit sequence to generate a coded second bit sequence.

In a possible implementation manner, the first bit sequence is a bit sequence obtained by the base station before performing the Polar code encoding. Specifically, the transmitting end first acquires information bits to be encoded, and performs coding verification on the information bits to be encoded. The check bit may be used to carry the identifier sequence. Optionally, all of the identifier sequence is carried in the check bit, or the first part of the identifier sequence is carried in the check bit. The transmitting end concatenates the information bits with the check bits carrying all or part of the identification sequence to generate the first bit sequence.

The manner of verifying the encoding is not limited in the embodiment of the present application. For example, the manner of the check code may be a CRC check, the check bit is a CRC bit, all the CRC bits are appended to the end of the sequence of information bits, or a part of the CRC bits are distributed into the sequence of information bits, part of the CRC bits. Appending to the end of the sequence of information bits; for example, the method of verifying the code may be Parity Check (PC), and the PC bits are used in the sequence of information bits, so that some information bits before the PC bits satisfy For a specific check relationship, the PC bit can also be placed at the end of the sequence of information bits; for example, the manner of verifying the code can be a hash check.

Step 402: The transmitting end carries part or all of the identification sequence in the second bit sequence to generate a third bit sequence.

The second bit sequence may be a rate-matched sequence or a sequence that has not undergone rate matching. If the second bit sequence is a sequence that has not undergone rate matching, after the transmitting end carries part or all of the identification sequence in the second bit sequence, the second bit sequence of the bearer identification sequence needs to be rate matched to generate the foregoing. The third bit sequence.

For example, the sender may carry all the identifier sequences in the check bits, and the sender may also carry all of the identifier sequences in the second bit sequence.

For another example, the transmitting end carries the first part of the identification sequence in the check bit, and the transmitting end carries the second part of the identification sequence in the second bit sequence, wherein the first part and the second part are different, or the first part There is an intersection with the second part.

Specifically, the manner of carrying the identifier sequence may be, but is not limited to, being carried in a scrambling manner and implemented by an interleaving operation.

If the bearer is carried in the scrambling manner, the transmitting end may perform part or all of the second bit sequence by using a part or all of the identification sequence. In addition, the scrambling mode may not be limited to performing a direct XOR operation, and the transmitting end may also scramble some or all of the identification sequence to the second bit sequence according to the set mapping relationship. For example, the sender will identify the part of the sequence. Or all, sequentially scrambled into the second bit sequence in a manner that is repeated several times.

If the interleaving operation is implemented, the transmitting end may determine the interleaving mode by part or all of the identification sequence, and perform an interleaving operation on the second bit sequence according to the generated interleaving pattern to generate a third bit sequence.

The foregoing steps 401 to 402 generally describe how the transmitting end performs coding and how to carry the identification sequence. The following steps describe that the receiving end carries the identification sequence in the same manner, and then performs decoding.

Step 403: The transmitting end sends a third bit sequence.

Step 404: The receiving end acquires a sequence to be decoded.

Step 405: The receiving end performs a descrambling operation on a part or all of the sequence to be decoded, or the receiving end performs a deinterleaving operation on the sequence to be decoded in the interleaving mode, where the interleaving mode is part or all of the identification sequence. determine.

Step 406: The receiving end performs a Polar code decoding on the sequence after the descrambling operation or the deinterleaving operation.

Correspondingly, the receiving end acquires the manner in which the transmitting end carries the identification sequence, and performs descrambling or deinterleaving on the sequence to be decoded in a corresponding manner.

Specifically, the receiving end may perform part or all of the identification sequence, and perform a descrambling operation on part or all of the sequence to be decoded.

The receiving end adopts part or all of the identification sequence, and performs descrambling operation on the sequence to be decoded according to the set mapping relationship. For example, the receiving end adopts part or all of the identification sequence, and performs descrambling operations on the sequence to be decoded in sequence in a manner of repeating several times.

Optionally, after the receiving end performs the Polar code decoding on the sequence after the descrambling operation or the de-interleaving operation, the check bit is extracted in the decoded sequence, and the check bit is solved by using part or all of the identification sequence. Disturbance operation.

The embodiment of the present application uses the encoded bit sequence to carry the identifier sequence. When the coded bit sequence is N long, the identifier sequence can carry up to 2 ^N terminals, which greatly increases the number of terminals that can be identified by the identifier sequence. It can adapt to the application scenarios of massive access in the future. In addition, the effect of using the encoded bit sequence to carry the identifier sequence in the embodiment of the present application is equivalent to using the frozen bit before encoding to carry the identifier sequence, but if the bit sequence before encoding is used to carry the identifier sequence, the pre-encoding is not guaranteed. The value of the fixed bit position of the Polar code is all 0, which results in a large hardware overhead. The present application can ensure that the value of the fixed bit position of the Polar code before encoding remains 0 because the encoded bit sequence is used to carry the identification sequence. This helps to maintain relatively low hardware overhead.

Based on the information bearing method shown in FIG. 4, the information carrying method provided by the embodiment of the present application is further described in detail below in conjunction with a specific application scenario. It is assumed that the transmitting end is a base station, the receiving end is a terminal, the identification sequence is an RNTI sequence, the information bit before encoding is DCI, the verification mode is CRC check, and the PDCCH is encoded by the Polar code encoding method, and the length of the encoded bit sequence is The length of the RNTI sequence is T bits, and the CRC length is 16 bits. (Of course, the number of CRC bits may also be other values, which is not specifically limited herein).

As shown in FIG. 5, in the encoding process of the PDCCH, the base station first performs 16-bit long CRC encoding on the DCI information to be transmitted, and obtains a 16-bit long CRC bit. Optionally, the base station performs a scrambling operation on a part of the RNTI sequence with a length of 16 bits and a 16-bit long CRC bit to obtain a 16-bit CRC bit scrambled by the RNTI, and concatenates the 16-bit CRC information scrambled by the RNTI. Go to the above DCI information. Of course, the base station can also choose to scramble the CRC bits without using RNTI. The base station performs Polar code encoding on the bit sequence generated after the concatenation. The base station carries the RNTI sequence using the encoded bit sequence. Specifically, the base station scrambles all of the RNTI sequence into the encoded bit sequence, or the base station scrambles another part of the RNTI sequence of length (T-16) into the encoded bit sequence, or the base station will A portion of length s in the RNTI sequence is scrambled into the encoded bit sequence, wherein a portion of length S overlaps with a portion of the length of 16 bits, and includes another portion of length (T-16) . If T is less than N, the base station may scramble the RNTI sequence into a portion of the encoded bit sequence; if T is equal to N, the base station may scramble the RNTI sequence to all of the encoded bit sequences.

In addition, if T is equal to N, the base station may further generate a corresponding interleaving pattern by using a set function mapping relationship by using the RNTI sequence, and send the encoded bit sequence into the interleaving mode to perform an interleaving operation.

Finally, the base station modulates, maps, and transmits the scrambled bit sequence or the interleaved bit sequence.

For example, as shown in FIG. 6, T=N, the base station scrambles all of the RNTI sequences of length T into the encoded bit sequence. Alternatively, the CRC bits may carry a part of the RNTI sequence. Specifically, the encoded bit sequence is {X ₀ , X ₁ , X ₂ ... X _N-1 }, and all RNTI sequences of length T are scrambled to {X ₀ , X ₁ , X ₂ ... X _{N In -1} }, the sequence {C ₀ , C ₁ , C ₂ ... C _N-1 } is generated. Thus, the encoded bit sequence can carry an N-long RNTI sequence.

As shown in Figure 7a, T = N and the CRC bits carry a portion of the RNTI sequence, and the base station scrambles another portion of the RNTI sequence into portions of the encoded bit sequence. The other part of the RNTI sequence may be different from or overlap with a part of the RNTI sequence. Specifically, the encoded bit sequence is {X ₀ , X ₁ , X ₂ ... X _M ... X _N-1 }, M is any number between 0 and N-1, and the RNTI sequence of length T is { Xsc, ₀ , Xsc, ₁ , Xsc, ₂ ... Xsc, _T-1 }, select a partial bit position in {X ₀ , X ₁ , X ₂ ... X _N-1 }, which can be regarded as selecting a subsequence For example, selecting the M consecutive bit positions in the front position, that is, the subsequences are {Xsc, ₀ , Xsc, ₁ , Xsc, ₂ ... Xsc, _M-1 }, scrambling another part of the above RNTI sequence to sequences _{{Xsc, 0, Xsc, 1} , Xsc, 2 ...... Xsc, M-1} , the generated sequence _{{C 0, C 1, C} 2 ...... C N-1}, {C 0, C 1, The C ₂ ... C _N-1 } sequence includes bits carrying the RNTI sequence and bits not carrying the RNTI sequence. Of course, any partial bit position can be selected among {X ₀ , X ₁ , X ₂ ... X _N-1 } according to specific needs. Of course, when a partial bit position is selected in {X ₀ , X ₁ , X ₂ ... X _N-1 }, the position of the top M information bits can also be selected. In this way, the length of the RNTI sequence can be flexibly extended, and the appropriate bit position can be flexibly selected to carry the RNTI sequence.

As shown in Figure 7b, T < N, the base station scrambles the RNTI sequence of length T into the portion of the encoded bit sequence. Alternatively, the CRC bits may carry a portion of the RNTI sequence. Specifically, the encoded bit sequence is {X ₀ , X ₁ , X ₂ ... X _T ... X _N-1 }, and the RNTI sequence of length T is {Xsc, ₀ , Xsc, ₁ , Xsc, ₂ ... Xsc , _T-1 }, select a partial bit position in {X ₀ , X ₁ , X ₂ ... X _N-1 }, for example, select T consecutive bit positions of the top position, and complete the RNTI sequence of length T Scrambling into the selected bit position, generating a sequence {C ₀ , C ₁ , C ₂ ... C _N-1 }, including the bearer RNTI in the sequence of {C ₀ , C ₁ , C ₂ ... C _N-1 } The bits of the sequence and the bits that do not carry the RNTI sequence. Of course, any partial bit position can be selected among {X ₀ , X ₁ , X ₂ ... X _N-1 } according to specific needs. Of course, when a partial bit position is selected in {X ₀ , X ₁ , X ₂ ... X _N-1 }, the top T information bit positions can also be selected. In this way, the length of the RNTI sequence can be flexibly extended, and the appropriate bit position can be flexibly selected to carry the RNTI sequence.

As shown in FIG. 8a, N=zT, z is a positive integer and z>1, and the base station sequentially scrambles the T-length RNTI sequence to all bit positions of the encoded bit sequence in a manner of repeating z times. Specifically, the encoded bit sequence is {X ₀ , X ₁ , . . . , X _T-1 , . . . , X _T , X _T+1 , . . . , X _2T-1 , . . . , X _N-1 }, and the length is The RNTI sequence of T is {Xsc, ₀ , Xsc, ₁ , ..., Xsc, _T-1 }, and the RNTI sequence of length T is repeatedly scrambled z times to the sequence {X ₀ , X ₁ , ..., X _{T- 1} , ..., X _T , X _T+1 , ..., X _2T-1 , ..., X _N-1 }, ie {Xsc, ₀ , Xsc, ₁ , ..., Xsc, _T-1 , Xsc, ₀ , Xsc _{, 1, ..., Xsc, T} -1 ... Xsc, T-1} to the scrambling sequence _{{X 0, X 1, ...} , X T-1, ..., X T, X T + 1, ..., X 2T- ₁ , ..., X _N-1 }, generating sequences {C ₀ , C ₁ , ..., C _T-1 , C _T , C _T+1 , ..., C _2T-1 , ..., C _N-1 }.

Based on the scrambling mode of FIG. 8a, as shown in FIG. 7b, the base station may further scramble the RNTI sequence of length T to the partial bit positions of the encoded bit sequence in a manner of repeating z times, specifically, after encoding. The bit sequence is {X ₀ , X ₁ , ..., X _T-1 , ..., X _T , X _T+1 , ..., X _2T-1 , ..., X _N-1 }, and the RNTI sequence of length T is {Xsc, ₀ , Xsc, ₁ , Xsc, ₂ ... Xsc, _T-1 }, the RNTI sequence of length T is repeated scrambled z times to the sequence {X ₀ , X ₁ , ..., X _T-1 , ..., X _T , X _T+1 , ..., X _2T-1 , ..., X _N-1 }, ie {Xsc, ₀ , Xsc, ₁ , ..., Xsc, _T-1 , Xsc, ₀ , Xsc, ₁ , ..., Xsc, _T-1 ... Xsc, _T-1 } scrambled into the sequence {X ₀ , X ₁ , ..., X _T-1 , ..., X _T , X _T+1 , ..., X _2T-1 , ..., X _N-1 }, generating sequences {C ₀ , C ₁ , ..., C _T-1 , C _T , C _T+1 , ..., C _2T-1 , ..., C _N-1 }. The sequence {C ₀ , C ₁ , ..., C _T-1 , C _T , C _T+1 , ..., C _2T-1 , ..., C _N-1 } includes the bit carrying the RNTI sequence and the un-bearing RNTI sequence. Bit. Of course, depending on the specific needs, any part of {X ₀ , X ₁ , ..., X _T-1 , ..., X _T , X _T+1 , ..., X _2T-1 , ..., X _N-1 } can be selected. Bit position.

8a and 8b only illustrate the mapping method of repeated scrambling of such an identification sequence. In practical applications, other arbitrary mapping modes can be selected. For example, only a part of the RNTI sequence may be selected for repetition, and details are not described herein.

As shown in FIG. 9, the base station performs an interleaving operation on the encoded bit sequence, and the interleaving mode of the interleaving operation is generated by the RNTI sequence. Specifically, the encoded bit sequence is {X ₀ , X ₁ , X ₂ , ... , X _M , ..., X _N-1 }, the RNTI sequence of length T is {Xsc, ₀ , Xsc, ₁ , Xsc, ₂ ... Xsc, _T-1 }, the RNTI sequence is not shown in the figure, by length Generating an interleaving pattern for the RNTI sequence of T, and interleaving the encoded bit sequence into {X ₀ , X ₁ , X ₂ , ..., X _M , ..., X _N-1 } according to the interleaving pattern to generate the RNTI sequence. The sequence {C ₀ , C ₁ , C ₂ , ..., C _M , ..., C _N-1 }.

Correspondingly, the decoding process of the PDCCH is as shown in FIG.

Step 1001: The terminal receives the Polar code, and performs a demapping and demodulation process.

Step 1002: The terminal selects a PDCCH location, and the terminal performs descrambling or deinterleaving on the demodulated bit sequence according to the determined manner in which the base station carries the RNTI sequence.

Step 1003: Perform a Polar code decoding operation on the bit sequence after the descrambling or deinterleaving operation.

Step 1004: Extract CRC information bits and DCI information bits in the decoded Polar code.

Step 1005: Perform descrambling on the extracted CRC information bits. This step is an optional step. If the eNB determines that the base station carries the RNTI sequence does not include the CRC bit scrambling operation, this step is omitted.

Step 1006: Perform CRC check on the decoded DCI information.

Step 1007: Determine whether the CRC check is passed. If yes, execute step 1008. Otherwise, select the next PDCCH location and perform step 1002.

Step 1008: Acquire the decoded DCI information, and end the process.

In this way, the terminal performs descrambling or deinterleaving according to the unique identifier of the base station according to the bearer identification sequence determined by the base station, which can well realize the role of distinguishing the user.

Based on the same inventive concept as the information bearing method shown in FIG. 4, as shown in FIG. 11, the embodiment of the present application further provides an information carrying apparatus 1100, where the information carrying apparatus 1100 is configured to perform the information carrying method shown in FIG. The information carrying device 1100 includes:

The processing unit 1101 is configured to perform Polar code encoding on the first bit sequence to generate a coded second bit sequence.

The processing unit 1101 is further configured to carry part or all of the identifier sequence in the second bit sequence to generate a third bit sequence, where the identifier sequence is used to identify the terminal;

The sending unit 1102 is configured to send a third bit sequence generated by the processing unit 1101.

Optionally, the processing unit 1101 is configured to: perform a scrambling operation on the second bit sequence by using part or all of the identification sequence to generate a third bit sequence.

Optionally, the processing unit 1101 is configured to perform a scrambling operation on part or all of the second bit sequence by using part or all of the identification sequence.

Optionally, the processing unit 1101 is configured to: scramble part or all of the identification sequence into the second bit sequence according to the set mapping relationship.

Optionally, the processing unit 1101 is configured to: sequentially buffer part or all of the identification sequence into the second bit sequence in a manner of repeating the number of times.

Optionally, the processing unit 1101 is configured to: perform an interleaving operation on the second bit sequence according to the interleaving mode to generate a third bit sequence, where the interleaving mode is determined by part or all of the identification sequence.

Optionally, the processing unit 1101 is further configured to: before performing the Polar code encoding on the first bit sequence, obtain information bits to be encoded, perform check and coding on the information bits, and obtain check bits; and carry all the identifier sequences in the school. In the check bit, the first part of the identification sequence is carried in the check bit; and the first bit sequence is generated based on the information bit and the check bit of the bearer identification sequence.

Optionally, the processing unit 1101 is further configured to: if the first part of the identifier sequence is carried in the check bit, carry the second part of the identifier sequence in the second bit sequence, where the first part and the second part Partially different, or there is an intersection between the first part and the second part.

Based on the same inventive concept as the information bearing method shown in FIG. 4, as shown in FIG. 12, the embodiment of the present application further provides an information carrying apparatus 1200, where the information carrying apparatus 1200 is configured to perform the information carrying method shown in FIG. The information carrying device 1200 includes:

The receiving unit 1201 is configured to acquire a sequence to be decoded.

The processing unit 1202 is configured to perform a descrambling operation on the sequence to be decoded acquired by the receiving unit 1201 by using part or all of the identification sequence, or to deinterleave the sequence to be decoded acquired by the receiving unit 1201 in the interleaving mode. Operation, wherein the interleaving mode is determined by part or all of the identification sequence, and the identification sequence is used to identify the terminal;

The processing unit 1202 is further configured to perform a Polar code decoding on the sequence after the descrambling operation or the deinterleaving operation.

Optionally, the processing unit 1202 is configured to perform a descrambling operation on part or all of the sequence to be decoded by using part or all of the identification sequence.

Optionally, the processing unit 1202 is configured to: perform a descrambling operation on the sequence to be decoded according to the set mapping relationship by using part or all of the identification sequence.

Optionally, the processing unit 1202 is configured to: perform a descrambling operation on the sequence to be decoded in sequence by using part or all of the identification sequence in a manner of repeating several times.

Optionally, the processing unit 1202 is further configured to: extract a check bit in the decoded sequence; and perform a descrambling operation on the check bit by using part or all of the identifier sequence.

Based on the same inventive concept as the information bearing method shown in FIG. 4, as shown in FIG. 13, the embodiment of the present application further provides an information carrying apparatus 1300, which can be used to execute the method shown in FIG. The information carrying apparatus 1300 includes a transceiver 1301 and a processor 1302. The processor 1302 is configured to execute a set of codes. When the code is executed, the executing causes the processor 1302 to execute the information carrying method shown in FIG. 4. Optionally, the information carrying apparatus 1300 may further include a memory 1303 for storing code executed by the processor 1302. Alternatively, the memory 1303 can be integrated with the processor 1302.

The processor 1302 may be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP.

The processor 1302 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL), or any combination thereof.

The memory 1303 may include a volatile memory such as a random-access memory (RAM); the memory 1303 may also include a non-volatile memory such as a flash memory (flash) Memory), hard disk drive (HDD) or solid-state drive (SSD); the memory 1303 may also include a combination of the above types of memories.

Based on the same inventive concept as the information bearing method shown in FIG. 4, as shown in FIG. 14, the embodiment of the present application further provides an information carrying device 1400, which can be used to execute the method shown in FIG. The information carrying device 1400 includes a transceiver 1401 and a processor 1402. The processor 1402 is configured to execute a set of codes. When the code is executed, the executing causes the processor 1402 to execute the information carrying method shown in FIG. 4. Optionally, the information carrying device 1400 may further include a memory 1403 for storing code executed by the processor 1402. Alternatively, the memory 1403 can be integrated with the processor 1402.

The processor 1402 can be a CPU, NP or a combination of a CPU and an NP.

The processor 1402 may further include a hardware chip. The above hardware chip may be an ASIC, a PLD, or a combination thereof. The above PLD may be a CPLD, an FPGA, a GAL, or any combination thereof.

The memory 1403 can include volatile memory, such as RAM; the memory 1403 can also include non-volatile memory, such as flash memory, HDD or SSD; the memory 1403 can also include a combination of the types of memory described above.

It should be noted that the apparatus provided in FIG. 13-14 can be used to implement the information bearing method shown in FIG. 4. In a specific implementation manner, the processing unit 1101 in FIG. 11 can be implemented by the processor 1302 in FIG. 13, and the transmitting unit 1102 can be implemented by the transceiver 1301 in FIG. The processing unit 1202 of FIG. 12 can be implemented by the processor 1402 of FIG. 14, and the receiving unit 1201 can be implemented by the transceiver 1401 of FIG.

The embodiment of the present application provides a computer storage medium for storing a computer program, where the computer program includes an information carrying method shown in FIG. 4.

The embodiment of the present application provides a computer program product including instructions, which when executed on a computer, causes the computer to execute the information bearing method shown in FIG.

Based on the same inventive concept as the information bearing method shown in FIG. 4, as shown in FIG. 15, the embodiment of the present application further provides a system chip 1500. The system chip 1500 includes an input interface 1501, an output interface 1502, and at least one processor. 1503, a memory 1504, the input interface 1501, the output interface 1502, the processor 1503, and the memory 1504 are connected by a bus 1505, the processor 1503 is configured to execute code in the memory 1504, when the code When executed, the processor 1503 implements the method performed by the base station of FIG. The bus 1505 can sometimes be omitted, for example, when other modules are implemented by logic circuits or hardware circuits.

The system chip 1500 shown in FIG. 15 can implement the various processes implemented by the base station in the foregoing method embodiment of FIG. 4. To avoid repetition, details are not described herein again.

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Thus, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, it is intended that the present invention cover the modifications and variations of the embodiments of the present invention.

Claims (33)

An information bearing method, comprising: The transmitting end performs polarity Polar code encoding on the first bit sequence to generate a coded second bit sequence; The transmitting end carries a part or all of the identifier sequence in the second bit sequence to generate a third bit sequence, where the identifier sequence is used to identify the terminal; The transmitting end sends the third bit sequence. The method according to claim 1, wherein the transmitting end carries part or all of the identification sequence in the second bit sequence to generate a third bit sequence, including: The transmitting end performs a scrambling operation on the second bit sequence by using part or all of the identification sequence to generate a third bit sequence. The method according to claim 2, wherein the transmitting end performs a scrambling operation on the second bit sequence by using part or all of the identification sequence, including: The transmitting end performs a scrambling operation on part or all of the second bit sequence by using part or all of the identification sequence. The method according to claim 2 or 3, wherein the transmitting end performs a scrambling operation on the second bit sequence by using part or all of the identification sequence, including: The transmitting end scrambles part or all of the identification sequence to the second bit sequence according to a set mapping relationship. The method according to claim 4, wherein the transmitting end scrambles part or all of the identification sequence to the second bit sequence according to a set mapping relationship, including: The transmitting end sequentially scrambles part or all of the identification sequence into the second bit sequence in a manner of repeating several times. The method according to claim 1, wherein the transmitting end carries part or all of the identification sequence in the second bit sequence to generate a third bit sequence, including: And the transmitting end performs an interleaving operation on the second bit sequence according to an interleaving mode to generate a third bit sequence, where the interleaving mode is determined by part or all of the identification sequence. The method according to any one of claims 1 to 6, wherein before the transmitting end performs the Polar code encoding on the first bit sequence, the method further includes: The transmitting end acquires information bits to be encoded, performs check coding on the information bits, and obtains a check bit; The transmitting end carries all the identifier sequences in the check bits, or the sending end carries the first part of the identifier sequence in the check bits; The transmitting end generates the first bit sequence based on the information bit and a parity bit that carries the identifier sequence. The method according to claim 7, wherein if the transmitting end carries the first part of the identification sequence in the check bit, then: The transmitting end carries part or all of the identification sequence in the second bit sequence, including: Transmitting, by the transmitting end, the second part of the identification sequence in the second bit sequence, wherein the first part and the second part are different, or the first part and the second part There is an intersection. An information bearing method, comprising: The receiving end acquires a sequence to be decoded; The receiving end performs a descrambling operation on the sequence to be decoded by using part or all of the identification sequence; or the receiving end performs a deinterleaving operation on the sequence to be decoded by using an interleaving mode, where the The interleaving pattern is determined by part or all of the identification sequence, and the identification sequence is used to identify the terminal; The receiving end performs polarity Polar code decoding on the sequence after the descrambling operation or the deinterleaving operation. The method according to claim 9, wherein the receiving end performs a descrambling operation on the sequence to be decoded by using part or all of the identification sequence, including: The receiving end uses a part or all of the identification sequence to perform a descrambling operation on part or all of the sequence to be decoded. The method according to claim 9 or 10, wherein the receiving end performs a descrambling operation on the sequence to be decoded by using part or all of the identification sequence, including: The receiving end adopts part or all of the identification sequence, and performs descrambling operation on the sequence to be decoded according to the set mapping relationship. The method according to claim 11, wherein the receiving end performs a descrambling operation on the sequence to be decoded according to a set mapping relationship by using part or all of the identification sequence, including: The receiving end adopts part or all of the identification sequence, and performs descrambling operations on the sequence to be decoded in sequence in a manner of repeating several times. The method according to any one of claims 9 to 12, wherein after the receiving end performs the Polar code decoding on the sequence after the descrambling operation or the deinterleaving operation, the method further includes: The receiving end extracts a check bit in the decoded sequence; The receiving end performs a descrambling operation on the parity bit by using part or all of the identification sequence. An information bearing device, comprising: a processing unit, configured to perform polarity Polar code encoding on the first bit sequence to generate a coded second bit sequence; The processing unit is further configured to carry part or all of the identifier sequence in the second bit sequence to generate a third bit sequence, where the identifier sequence is used to identify the terminal; And a sending unit, configured to send a third bit sequence generated by the processing unit. The apparatus of claim 14 wherein said processing unit is operative to: The second bit sequence is scrambled by using part or all of the identification sequence to generate a third bit sequence. The apparatus of claim 15 wherein said processing unit is operative to: Part or all of the second bit sequence is scrambled using part or all of the identification sequence. The device according to claim 15 or 16, wherein the processing unit is configured to: Part or all of the identification sequence is scrambled into the second bit sequence according to a set mapping relationship. The apparatus of claim 17 wherein said processing unit is operative to: Part or all of the identification sequence is sequentially scrambled into the second bit sequence in a manner that is repeated several times. The apparatus of claim 14 wherein said processing unit is operative to: Interleaving the second bit sequence according to an interleaving pattern to generate a third bit sequence, wherein the interleaving pattern is determined by part or all of the identification sequence. The apparatus according to any one of claims 14 to 19, wherein the processing unit is further configured to: Before performing the Polar code encoding on the first bit sequence, acquiring information bits to be encoded, performing check coding on the information bits, and obtaining a check bit; All of the identification sequence is carried in the check bit, or the first part of the identification sequence is carried in the check bit; The first bit sequence is generated based on the information bits and a check bit carrying the identification sequence. The device of claim 20, wherein the processing unit is further configured to: If the processing unit carries the first part of the identification sequence in the check bit, the second part of the identification sequence is carried in the second bit sequence, wherein the first part and the The second part is different from each other, or there is an intersection of the first part and the second part. An information bearing device, comprising: a receiving unit, configured to acquire a sequence to be decoded; a processing unit, configured to perform a descrambling operation on the sequence to be decoded acquired by the receiving unit by using part or all of the identification sequence; or, to solve the sequence to be decoded acquired by the receiving unit by using an interleaving mode An interleaving operation, wherein the interleaving mode is determined by part or all of the identification sequence, and the identification sequence is used to identify a terminal; The processing unit is further configured to perform polar Polar code decoding on the sequence after the descrambling operation or the deinterleaving operation. The apparatus of claim 22 wherein said processing unit is operative to: Part or all of the sequence to be decoded is descrambled using part or all of the identification sequence. The device according to claim 22 or 23, wherein the processing unit is configured to: The part to be decoded is descrambled according to a set mapping relationship by using part or all of the identification sequence. The apparatus of claim 24 wherein said processing unit is operative to: The part to be decoded is descrambled sequentially by using part or all of the identification sequence in a manner of repeating several times. The apparatus according to any one of claims 22 to 25, wherein the processing unit is further configured to: Extracting check bits in the decoded sequence; The check bits are descrambled using part or all of the identification sequence. An information bearing device comprising a transceiver and a processor, wherein the processor is operative to invoke a set of programs to perform the method of any one of claims 1-8. The apparatus of claim 27, wherein said apparatus further comprises a memory for storing a program invoked by said processor. An information bearing device comprising a transceiver and a processor, wherein the processor is operative to invoke a set of programs to perform the method of any one of claims 9-13. The apparatus of claim 29, wherein said apparatus further comprises a memory for storing a program invoked by said processor. A communication system, comprising the apparatus according to any one of claims 14 to 21 or 27 to 28, and the apparatus according to any one of claims 22 to 26 or 29 to 30 Device. A computer storage medium characterized by storing a computer program comprising instructions for performing the method of any one of claims 1 to 13. A computer program product, characterized in that the computer program product comprises instructions for causing a computer to perform the method of any one of claims 1 to 13 when the computer program product is run on a computer.

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